configure.ac: add -Werror to default compiler options

[Dan Kegel]

On Thu, Sep 1, 2011 at 8:52 AM, Dan Kegel <dank at kegel.com> wrote:
> On Thu, Sep 1, 2011 at 1:35 AM, Jerome Leclanche <adys.wh at gmail.com> wrote:
>> Here is a warning report from a 64bit system. I get a lot of warnings
>> on both 32 and 64bit wines. Many of them are "variable set but not
>> used" (unused error returns, ...).
>>
>> http://bugs.winehq.org/show_bug.cgi?id=26768 was filed a while ago for
>> the oleaut32 spam.
>
> Wow.  Guess we have a ways to go.

Finally dug up AJ's position on the question:
http://www.winehq.org/pipermail/wine-devel/2008-September/069203.html

So, no -Werror by default in git.

Buildbot may at some point start complaining about patches
that introduce new warnings, though.
 Dan